<template>
    <div id="app">
        <h3>案例</h3>
        <a-input placeholder="请输入任务" class="my_ipt" :value="inputValue" @change="inputChange" />
        <a-button type="primary" @click="addItemToList">添加事项</a-button>

        <a-list bordered :dataSource="infoList" class="dt_list">
            <a-list-item slot="renderItem" slot-scope="item">
                <!-- 复选框 -->
                <a-checkbox :checked="item.done" @change="(e)=>{cbChange(e,item.id)}">{{ item.info }}</a-checkbox>
                <!-- 删除链接 -->
                <a slot="actions" @click="removeItemById(item.id)">删除</a>
            </a-list-item>

            <!-- footer区域 -->
            <div class="footer" slot="footer">
                <span>{{unDoneLength}}条剩余</span>
                <a-button-group>
                    <a-button :type="viewKey==='all'?'primary':'default'" @click="changeList('all')">全部</a-button>
                    <a-button :type="viewKey==='undoen'?'primary':'default'" @click="changeList('undoen')">未完成</a-button>
                    <a-button :type="viewKey==='done'?'primary':'default'" @click="changeList('done')">已完成</a-button>
                </a-button-group>
                <a @click="clean">清除已完成</a>
            </div>
        </a-list>
    </div>
</template>

<script>
import {mapState,mapGetters} from 'vuex'
export default {
  data () {
    return {
      
    }
  },

  mounted () {

  },

  methods: {
    // 文本框内容变化
    inputChange(e){
        this.$store.commit('setInputValue',e.target.value)
    },
    addItemToList(){
        if (this.inputValue.trim().length <=0) {
            return this.$message.warning('文本框不能为空')    
        }
        this.$store.commit('addItem')   
    },
    removeItemById(id){
        this.$store.commit('removeItem',id)
    },
    cbChange(e,id){
        const param = {
            id:id,
            status:e.target.checked
        }
        this.$store.commit('changeStatus',param)
    },
    clean(){
        this.$store.commit('cleanDone')
    },
    changeList(key){
        this.$store.commit('changeViewKey',key)
    }
  },
  computed:{
    ...mapState(['inputValue','viewKey']),
    ...mapGetters(['unDoneLength','infoList'])
  }
}
</script>

<style scoped>

#app {
    padding: 50px;
}

.my_ipt {
    width: 500px;
    margin-right: 10px;
}

.dt_list {
    width: 500px;
    margin-top: 10px;
}

.footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
}
</style>
